Evaluation of apical seal with Renew (calcium hydroxide) and Synthograft (tricalcium phosphate) in teeth with open apices.

The study was conducted in vivo (30 teeth) and in-vitro (135 teeth) to evaluate the leakage of apical plug with Renew, Synthograft and Control. In-vivo it was observed that Renew is significantly effective and it showed its immediate effect after filling whereas the Synthograft is not effective immediately but it is effective after 3 months and in control group the apical plug was effective after six months. When examined in vitro, it was observed that there was more leakage in Synthograft and control as compared to Renew in anterior, premolars and molars.

Evaluation of decalcified allogenic bone matrix grafts in and around root apices. A histological study.

Decalcified Allogenic Bone grafts were implanted in and around eighteen root apices after apicoectomy. The procedure was carried out on eighteen rabbits, dividing them into three groups of six rabbits each. The animals were sacrificed after 48-72 hours, 8-10 days & 8-10 weeks period of interval. Result of the present investigation reveal that DABM grafts stimulate osteogenesis and cementogenesis after the initial phase of inflammation. Tissues simulating bone and cementum appear at the apical end, speculating that the grafts would certainly result in physiological sealing of root apices. The possibility of saving the life of non vital teeth with or without wide apical foramen will enhance in future.

Comparative study to evaluate the efficacy of surgical and conservative techniques for apexification in young permanent teeth with open apices.

The Study was conducted to compare and evaluate the effectiveness of surgical and conservative approach for apexification. Twenty-four non-vital permanent maxillary anterior teeth were selected for this study. The teeth selected were having wide apical foramen and definite radiolucent periapical area. Twelve teeth were treated under conservative method and another 12 teeth with surgical method using 'Renew' (A radioopaque calcium Hydroxide paste). The patient were recalled after 1 1/2, 3, 4 and 6 Months. The results of the study indicated that Calcific bridge formation is rapid in teeth treated with conservative technique. However, periapical repair is accelerated in teeth treated by surgical technique, though the results are comparable at the end of 6 months, So the conservative approach is preferred as it saves surgical trauma. In conservative technique, 75% of the teeth showed calcific bridge formation and 100% showed decrease in periapical radiolucent area by 3.56 mm (mean) after 6 months. In surgical technique the radiographic evidence of calcific bridge formation was noticed in 54.51% of teeth after 6 months. However in 100% of teeth there was decrease in periapical radiolucent area by 3.53 mm (mean) after 6 months.